Spearphishing: The Dirty Email Trick Favored by the Nastiest Hackers

A new report says that the Chinese military is secretly obtaining sensitive data from U.S. companies. A key technique is "spearphishing," an approach that tricks a targeted individual to reveal information that can be used to infiltrate the company or government agency that person works for.

Security companies have been warning about spearfishing for the last two to three years, and its use is increasing. But now that it has become top news, thanks to a report from U.S. computer-security firm Mandiant Corp. explaining how Chinese operatives tricked workers at Coca-Cola and other major American firms, what is at the top of many people's minds is this: How do you know if you're being spearphished?